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Agamidae

Masked Horned Tree Lizard

Acanthosaura crucigera · Mountain Horned Dragon
กิ้งก่าเขาหนามภูเขา
IntermediateDiurnal · active now
14:00
Day

Drag the sun. Masked Horned Tree Lizard is diurnal, so what it is doing changes with the light.

Check your setup against this sheet
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Identity

Family / Order
Agamidae / Squamata
Adult size
25–30 cm
Lifespan (captivity)
8–10 yrs
Activity
Diurnal; arboreal
Temperament
Calm, cryptic — display species
Price (THB)
Moderate

Enclosure and conditions

Basking
30–32 °C (86–90 °F)
Ambient
24–27 °C (never > 29 all-day)
Humidity
70–80% (mist 2–3×/day)
UVB (required)
Yes
Min. size
45 × 45 × 60 cm+ vertical, planted
Furnishings
Branches, foliage, leaf litter
Water
Dripper / misting (drink droplets)

Diet

Diet type
Insectivore — variety essential
Staple insects
Crickets, roaches, earthworms (love)
Calcium
Dust + UVB

Behaviour and handling

Handling
Minimal — arboreal display
Cohabitation
Solo (or pair with space)
Defense
Spiky crest, gape; rarely bites

Reproduction

Reproduction
Oviparous
Clutch
10–15 eggs
Incubation
~110–150 days

Common health problems

Dehydration
Signswon't drink standing water
Preventdripper + misting
Respiratory infection
Signscool + damp + stagnant
Preventventilation + correct temps
Metabolic bone disease
Signspoor UVB/Ca
PreventUVB + calcium
Parasites
Signscommon in wild-caught
Preventchoose captive-bred

When to see a vet

This is not veterinary advice. If red flags appear (open-mouth breathing, months of weight loss, 'stargazing', persistent regurgitation) consult a qualified exotic (herp) veterinarian. Quarantine new arrivals 30–90 days.

Good to know

  • Master of camouflage — its spiny crest and colours mimic mossy branches.
  • A cool-running tropical species — overheating is a common keeper mistake.

Common questions

Beginner lizard?

Intermediate — humidity + cool temps must be precise.

Handleable?

Best as a display species.

What it needs

  • Vertical planted terrarium
  • UVB + basking + thermostat
  • Dripper + mister
  • Branches & leaf litter
  • Calcium + feeders
  • Hygro/thermometer

Others in this group

Sources